Heavy metal pollution treatment device based on soil protection

Abstract

The invention discloses a heavy metal pollution treatment device based on soil protection, and relates to the technical field of soil remediation, the heavy metal pollution treatment device comprises a dehydration mechanism, the upper end of the dehydration mechanism is provided with a soil dilution stirring box used for stirring slurry, the bottom of the soil dilution stirring box is provided with a pump machine, and the top of the pump machine is provided with a slurry pipe; and a mounting mechanism is arranged at the upper end of the dewatering mechanism. Slurry is pumped by a pump machine and conveyed to the slurry treatment mechanism through a slurry pipe, the mechanism not only realizes split-flow control of the slurry, but also promotes chemical conversion or precipitation of heavy metal pollutants by accurately spraying a chemical reagent, so that the treatment pertinence and controllability are improved, then the slurry enters a slurry stirring piece in the slurry cleaning mechanism, and the treatment efficiency is improved. Under the action of mechanical stirring, the slurry and the medicament are further fully mixed, the heavy metal removal effect is enhanced, meanwhile, the slurry is pushed to flow, and the whole treatment process is continuous and stable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of soil remediation, in particular to a heavy metal pollution treatment device based on soil protection. BACKGROUND

[0002] For example, a mobile soil leaching scrubbing vehicle is disclosed in CN118681913A, and the organic combination of multiple processes realizes the centralization and pry-mounted features of the soil leaching remediation equipment. The entire process is in the form of centralized equipment of the chassis assembly, combined with stirring, scrubbing, screening and other technical means, and the polluted soil particles of different particle sizes are scrubbed and screened, clean soil is screened out, the polluted soil is effectively reduced, and the disposal and remediation target of the polluted soil is realized.

[0003] In the heavy metal contaminated soil remediation technology, the mud slurry conveying and medicament reaction stages generally have problems such as poor mud slurry flow, inaccurate medicament addition and insufficient reaction, which leads to low heavy metal removal efficiency and affects the overall remediation effect. In addition, the above-mentioned application lacks an effective preliminary dehydration treatment link, and the dehydration process mainly relies on gravity sedimentation, which has the defects of low dehydration efficiency, unclear solid-liquid layering of mud slurry, and liquid phase backflow interfering with subsequent treatment. In the mud slurry conveying and paving stage, the equipment often causes uneven dehydration due to uneven mud slurry distribution and unstable discharging. Therefore, the application provides a heavy metal pollution treatment device based on soil protection to meet the needs. SUMMARY

[0004] The purpose of the present application is to provide a heavy metal pollution treatment device based on soil protection, which can effectively solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a heavy metal pollution treatment device based on soil protection, comprising a dehydration mechanism, the upper end of the dehydration mechanism is provided with a soil dilution stirring box for stirring the mud slurry, the bottom of the soil dilution stirring box is provided with a pump, the top of the pump is provided with a mud slurry pipe, the upper end of the dehydration mechanism is provided with a mounting mechanism, the bottom of the mounting mechanism is provided with a mud slurry discharge mechanism for discharging and conveying the mud slurry to the surface of the dehydration mechanism for dehydration treatment, one side of the mud slurry discharge mechanism is provided with a driving motor, one side of the mounting mechanism is provided with a driving motor, one side of the inside of the mounting mechanism is provided with a mud slurry treatment mechanism for changing the flow direction of the mud slurry in cooperation with the mud slurry pipe, and two mud slurry cleaning mechanisms are symmetrically arranged in the mounting mechanism for treating heavy metal pollutants in the mud slurry in cooperation with the mud slurry treatment mechanism.

[0006] The mud slurry cleaning mechanism comprises:

[0007] The stirring piece is used for stirring the slurry with the slurry processing mechanism to accelerate the separation and treatment of heavy metal pollutants.

[0008] The water absorbing piece is used for preliminarily removing part of water in the slurry to realize preliminary dehydration treatment.

[0009] The slurry processing mechanism comprises a mounting pipe, two water spraying ports for spraying chemical reagents are symmetrically arranged on the outer surface of the upper part of the mounting pipe, and a bunching piece is arranged on one side of the mounting pipe.

[0010] The stirring piece comprises a support rod and a plurality of arc pieces arranged in a ring array, a plurality of rectangular grooves arranged at equal intervals are formed in the inner wall of the arc piece, the arc piece is located in the interior of the mounting pipe, and the arc piece is attached to the inner wall of the mounting pipe.

[0011] The outer surface of the support rod is provided with a plurality of rotary leaves arranged in a ring array, and the plurality of rotary leaves are installed on the inner wall of the arc piece.

[0012] The mounting mechanism comprises a mounting box mounted on the upper end of the dehydration mechanism, two support rings are symmetrically arranged on one side of the inner wall of the mounting box, the mounting pipe is mounted on the outer surface of the support ring, a horizontal plate is arranged on the upper end of the mounting box, and one end of the slurry pipe extends through the horizontal plate to the interior of the mounting pipe.

[0013] The water absorbing piece comprises a mud cone and a scraper, the interior of the mud cone is provided with a cone hopper, a plurality of adsorption holes arranged in a ring array are formed in the outer surface of the cone hopper, and a through pipe is communicated with one end of the cone hopper.

[0014] The inner wall of the mounting box is symmetrically provided with a mounting ring on one side, the cone hopper is fixedly installed in the interior of the mounting ring, one end of the through pipe penetrates through the mounting box, and the scraper is fixedly installed at the lower end of the horizontal plate.

[0015] The mud cone is fixedly sleeved on the outer circumferential surface of the support rod, and the two ends of the support rod penetrate through the mounting box and are rotationally connected with the mounting box, and one end of the support rod is fixedly connected with the output shaft of the driving motor.

[0016] The slurry discharging mechanism comprises a base and a support rod, an inclined plate is arranged on the lower end of the base, a sleeve pipe is arranged on the bottom wall of the base, and an outlet is formed in the outer surface of the sleeve pipe.

[0017] The outer surface of the support rod is provided with a material rod, a plurality of material grooves arranged in a ring array are formed in the outer surface of the material rod, and the material rod is located in the interior of the sleeve pipe.

[0018] The base is fixedly installed at the lower end of the installation box, the base is in the shape of a triangular prism, and one end of the supporting rod is fixedly connected with the output end of the driving motor.

[0019] In summary, the technical effects and advantages of the present application are:

[0020] 1、The mud in the present application is pumped and transported to the mud treatment mechanism through the mud pipe, which not only realizes the flow control of the mud, but also promotes the chemical conversion or precipitation of heavy metal pollutants through precise spraying of chemical reagents, improves the pertinence and controllability of the treatment, and then the mud enters the stirring element in the mud cleaning mechanism, and further realizes the full mixing of the mud and the reagent under the action of mechanical stirring, enhances the heavy metal removal effect, and at the same time promotes the flow of the mud, ensures the continuous and stable of the whole treatment process, and finally the treated mud is uniformly discharged into the installation mechanism, which provides a good material basis for subsequent dewatering and pollutant separation.

[0021] 2、After the mud in the present application flows into the installation mechanism, the water absorbing element arranged at the upper part of the installation mechanism begins to perform preliminary dewatering treatment on the mud, which can effectively remove part of the free water in the mud, promote the separation between the solid particles and the liquid pollutants, thereby significantly reducing the overall water content of the mud and improving the efficiency of subsequent deep dewatering and heavy metal separation; Since the water absorbing element is arranged in the upper region of the installation mechanism, it can preferentially contact the upper layer of sewage on the surface of the mud, realize rapid adsorption and discharge of the liquid components, this layout not only improves the dewatering efficiency, but also avoids the problem of mixed backflow caused by water retention in the traditional dewatering process, ensuring that the mud has a good stratification state before entering the next processing stage.

[0022] 3、After the preliminary dewatering in the present application, the mud is stably deposited at the bottom of the installation mechanism and enters the processing range of the slurry discharge mechanism, at this time the mud has been in a relatively uniform and stable deposition state, the slurry discharge mechanism starts to run under the drive of the driving motor, and performs homogenization treatment on the deposited mud, effectively avoiding the problem of too large local water content difference caused by uneven distribution of the mud, and the subsequent slurry discharge mechanism transports the treated mud to the processing surface of the lower dewatering mechanism in a uniform spreading manner, ensuring that the mud is evenly stressed during the dewatering process, improving the overall dewatering effect and the removal efficiency of heavy metal pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0024] Figure 1 First perspective view of the heavy metal pollution treatment device for soil protection;

[0025] Figure 2 Second perspective view of the heavy metal pollution treatment device for soil protection;

[0026] Figure 3 Third perspective view of the heavy metal pollution treatment device for soil protection;

[0027] Figure 4 Fourth perspective view of the heavy metal pollution treatment device for soil protection;

[0028] Figure 5 Internal perspective connection structure diagram of the heavy metal pollution treatment device for soil protection;

[0029] Figure 6 Perspective connection structure diagram of the installation mechanism;

[0030] Figure 7 Perspective connection structure diagram of the slurry discharge mechanism;

[0031] Figure 8 Perspective connection structure diagram of the material rod;

[0032] Figure 9 First perspective connection structure diagram of the slurry treatment mechanism;

[0033] Figure 10 Second perspective connection structure diagram of the slurry treatment mechanism;

[0034] Figure 11 Perspective connection structure diagram of the slurry cleaning mechanism;

[0035] Figure 12 Perspective connection structure diagram of the slurry stirring piece;

[0036] Figure 13 Perspective connection structure diagram of the arc fitting;

[0037] Figure 14 Perspective connection structure diagram of the water suction piece;

[0038] Figure 15 Perspective connection structure sectional view of the water suction piece;

[0039] Figure 16 Perspective connection structure sectional view of the mud cone.

[0040] In the figure: 1, soil dilution stirring box; 2, pump machine; 3, mud pipe; 4, driving motor; 5, driving motor; 6, mounting mechanism; 61, mounting ring; 62, mounting box; 63, cross plate; 64, support ring; 7, dehydration mechanism; 8, slurry discharge mechanism; 81, base; 82, sleeve; 83, outlet; 84, support rod; 85, inclined plate; 86, material rod; 87, trough; 9, slurry cleaning mechanism; 91, water suction part; 911, scraper; 912, mud cone; 913, through pipe; 914, cone bucket; 915, adsorption hole; 92, stirring part; 921, support rod; 922, rotating blade; 923, arc fitting; 924, rectangular groove; 10, slurry treatment mechanism; 101, mounting pipe; 102, water jet; 103, beam part. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] Embodiment one, reference Figures 1 to 16 The heavy metal pollution treatment device based on soil protection shown in the figure comprises a dehydration mechanism 7, the upper end of the dehydration mechanism 7 is provided with a soil dilution stirring box 1 for stirring the mud, the bottom of the soil dilution stirring box 1 is provided with a pump machine 2, the top of the pump machine 2 is provided with a mud pipe 3, the upper end of the dehydration mechanism 7 is provided with a mounting mechanism 6, the bottom of the mounting mechanism 6 is provided with a slurry discharge mechanism 8 for discharging and conveying the mud to the surface of the dehydration mechanism 7 for dehydration treatment, one side of the slurry discharge mechanism 8 is provided with a driving motor 5, one side of the mounting mechanism 6 is provided with a driving motor 4, one side of the inside of the mounting mechanism 6 is provided with a slurry treatment mechanism 10 for changing the flow direction of the mud in cooperation with the mud pipe 3, and two slurry cleaning mechanisms 9 are also symmetrically arranged in the mounting mechanism 6, for treating the heavy metal pollutants in the mud in cooperation with the slurry treatment mechanism 10;

[0043] The slurry cleaning mechanism 9 comprises:

[0044] The stirring part 92 is used for stirring the mud in cooperation with the slurry treatment mechanism 10, so as to accelerate the separation and treatment of the heavy metal pollutants.

[0045] The water suction part 91 is used for preliminarily removing part of the water in the mud, so as to realize preliminary dehydration treatment.

[0046] It is worth mentioning that the heavy metal contaminated soil after screening and spraying of chemical agent dilution is sent into the soil dilution stirring box 1, and the soil dilution stirring box 1 fully stirs the mud, so that the heavy metal components in the soil can be leached out and preliminarily react with the added chemical agent, thereby improving the subsequent heavy metal separation efficiency;

[0047] After the preliminary stirring and mixing is completed, the mud is extracted by the pump 2 arranged at the bottom of the soil dilution stirring box 1 and transported to the mud treatment mechanism 10 in the installation mechanism 6 through the mud pipe 3 connected above, and the mud treatment mechanism 10 not only realizes the shunt control of the mud, but also guides the mud to flow along the set path while spraying the specified proportion of chemical reagent into the mud to further promote the chemical conversion or precipitation reaction of the heavy metal pollutants;

[0048] The mud entering the mud treatment mechanism 10 then enters the mud stirring member 92 in the mud cleaning mechanism 9, where the mud is fully mixed with the chemical reagent through mechanical stirring to enhance the removal effect of the heavy metal, and the mud stirring member 92 also plays a role in promoting the flow of the mud, discharges the treated mud from the mud treatment mechanism 10 and sends it into the main cavity of the installation mechanism 6;

[0049] The mud is extracted by the pump 2 and transported to the mud treatment mechanism 10 through the mud pipe 3, which not only realizes the shunt control of the mud, but also promotes the chemical conversion or precipitation of the heavy metal pollutants by accurately spraying the chemical reagent, thereby improving the pertinence and controllability of the treatment, and then the mud enters the mud stirring member 92 in the mud cleaning mechanism 9, which further realizes the full mixing of the mud and the chemical reagent under the action of mechanical stirring to enhance the removal effect of the heavy metal, while promoting the flow of the mud to ensure the continuity and stability of the whole treatment process, and finally the treated mud is uniformly discharged into the installation mechanism 6 to provide a good material basis for subsequent dehydration and pollutant separation.

[0050] When the mud flows into the installation mechanism 6, the water absorption member 91 arranged at the upper part of the installation mechanism 6 starts to preliminarily dehydrate the mud, removes part of the free water in the mud, and promotes the separation between the solid phase and the liquid phase in the mud, so that the overall water content of the mud is significantly reduced, thereby improving the efficiency of subsequent deep dehydration and heavy metal separation.

[0051] When the mud flows into the installation mechanism 6, the water absorption member 91 arranged at the upper part of the installation mechanism 6 starts to preliminarily dehydrate the mud, which can effectively remove part of the free water in the mud and promote the separation between the solid phase particles and the liquid phase pollutants, thereby significantly reducing the overall water content of the mud and improving the efficiency of subsequent deep dehydration and heavy metal separation.

[0052] Due to the arrangement of the water absorption part 91 in the upper area of the installation mechanism 6, it can preferentially contact the upper layer of sewage on the surface of the slurry, realize rapid adsorption and discharge of the liquid phase component, and this layout not only improves the dehydration efficiency, but also avoids the mixed reflux problem caused by water retention in the traditional dehydration process, ensuring that the slurry has a good layered state before entering the next processing stage.

[0053] In addition, through the pre-dehydration effect of the water absorption part 91, the flowability of the slurry is effectively controlled, which is beneficial to the uniform distribution of the slurry by the subsequent slurry discharge mechanism 8, and further improves the deep dehydration effect of the slurry by the dehydration mechanism 7.

[0054] With the reduction of water in the slurry and the sedimentation of solid phase materials, the slurry forms a clear layered structure in the installation mechanism 6, and the preliminarily dehydrated slurry is deposited at the bottom of the installation mechanism 6 and enters the processing range of the slurry discharge mechanism 8. At this time, the slurry has a relatively stable deposition state, and the slurry discharge mechanism 8 is driven by the driving motor 5 to operate and uniformly spread the deposited slurry on the processing surface of the lower dehydration mechanism 7, providing a good material basis for subsequent deep dehydration or heavy metal separation process.

[0055] Wherein, with the gradual reduction of water in the slurry, the solid phase materials continuously sediment under the action of gravity, so that the slurry forms a clear layered structure inside the installation mechanism 6. This process helps to further improve the solid-liquid separation effect of the slurry, making the boundary between the upper layer of sewage and the lower layer of sediment clear, which is beneficial for subsequent targeted treatment.

[0056] The preliminarily dehydrated slurry is stably deposited at the bottom of the installation mechanism 6 and enters the processing range of the slurry discharge mechanism 8. At this time, the slurry is in a relatively uniform and stable deposition state, and the slurry discharge mechanism 8 starts to operate under the drive of the driving motor 5 to homogenize the deposited slurry, effectively avoiding the problem of too large local moisture content difference caused by uneven distribution of the slurry. The subsequent slurry discharge mechanism 8 uniformly spreads the treated slurry to the processing surface of the lower dehydration mechanism 7, ensuring that the slurry is evenly stressed during dehydration, improving the overall dehydration effect and the removal efficiency of heavy metal pollutants.

[0057] Embodiment two, according to the installation mechanism 6, the slurry treatment mechanism 10 and the slurry cleaning mechanism 9 described in embodiment one, this embodiment provides further technical solutions of the installation mechanism 6, the slurry treatment mechanism 10 and the stirring part 92.

[0058] The installation mechanism 6 comprises an installation box 62 installed at the upper end of the dehydration mechanism 7, two support rings 64 are symmetrically arranged on one side of the inner wall of the installation box 62, and an installation pipe 101 is installed on the outer surface of the support ring 64. The upper end of the installation box 62 is provided with a horizontal plate 63, and one end of the slurry pipe 3 extends through the horizontal plate 63 to the inside of the installation pipe 101.

[0059] The slurry treatment mechanism 10 comprises a mounting pipe 101, two water injection ports 102 for injecting chemical reagents are symmetrically arranged on the outer surface of the upper part of the mounting pipe 101, and a beam port member 103 is arranged on one side of the mounting pipe 101.

[0060] It is worth noting that the slurry is injected into the inside of the mounting pipe 101 through the slurry pipe 3, and when the slurry passes through the herringbone structure in the middle of the mounting pipe 101 structure, the slurry is divided into two parts and flows into the inside of the mounting pipe 101, and the structure design of the beam port member 103 is Figure 9 as shown, which can temporarily block the slurry in the inside of the mounting pipe 101.

[0061] The stirring member 92 comprises a support rod 921 and a plurality of arc members 923 arranged in a ring array, a plurality of rectangular grooves 924 are arranged on the inner wall of the arc member 923 in an equidistant manner, the arc member 923 is located in the inside of the mounting pipe 101, and the arc member 923 is attached to the inner wall of the mounting pipe 101.

[0062] A plurality of rotating leaves 922 are arranged on one side of the outer surface of the support rod 921 in a ring array, and the plurality of rotating leaves 922 are all mounted on the inner wall of the arc member 923.

[0063] It is worth noting that when the slurry is transported into the inside of the mounting pipe 101 through the pipeline, the support rod 921 is rotated under the driving of the driving motor 4, and the rotating leaves 922 and the arc member 923 fixedly connected therewith are synchronously rotated.

[0064] The outer contour of the arc member 923 is precisely designed, and the outer surface thereof is tightly attached to the inner wall of the mounting pipe 101, and with the rotation of the arc member 923, the slurry is gradually sucked into the inside cavity thereof, realizing the preliminary concentration and guiding effect, and at the same time, the water injection port 102 arranged on the outer wall of the mounting pipe 101 injects a predetermined amount of chemical reagent, which is mixed with the slurry in the process of flowing into the inside of the arc member 923, thereby realizing the preliminary reaction and modification treatment of the heavy metal pollutants.

[0065] The mixed slurry and the reagent are discharged through the rectangular grooves 924, and further fully stirred and homogenized under the action of the high-speed rotation of the rotating leaves 922, so as to ensure that the reagent and the slurry achieve the best contact effect and reaction efficiency.

[0066] Finally, the fully mixed slurry enters the beam port member 103, which adopts a tapered structure design, which can effectively improve the flow rate of the slurry, so that the slurry is uniformly injected to the position of the water suction member 91 with higher kinetic energy. The structure not only enhances the mixing effect of the slurry and the reagent, but also improves the overall efficiency of the subsequent treatment device for removing heavy metals.

[0067] In the process of heavy metal contaminated soil remediation, the slurry first enters the inside of the installation pipe 101 through the conveying pipe, the support rod 921 rotates under the driving of the driving motor 4, and the rotating blade 922 and the arc fitting 923 are synchronously driven to rotate. The structure design ensures that the slurry can be stably sucked and preliminarily concentrated and guided, effectively avoiding slurry flow disorder, significantly improving the stability and continuity of the feeding process. The mixed slurry and the reagent are discharged through the rectangular groove 924 and are fully stirred and homogenized under the action of the high-speed rotating blade 922, greatly increasing the contact area and reaction rate between the reagent and the slurry, ensuring that heavy metal components such as lead, cadmium, zinc, etc. can be fully combined with the reagent and converted into a form easy to separate, thereby significantly improving the removal efficiency of heavy metals.

[0068] In this embodiment, a further technical solution of the water absorption member 91 is provided.

[0069] The water absorption member 91 includes a mud cone 912 and a scraper 911. The inside of the mud cone 912 is provided with a cone bucket 914. The outer surface of the cone bucket 914 is provided with a plurality of adsorption holes 915 arranged in a ring array. One end of the cone bucket 914 is connected with a through pipe 913.

[0070] The inner wall of the installation box 62 is symmetrically provided with an installation ring 61. The cone bucket 914 is fixedly installed in the inside of the installation ring 61. One end of the through pipe 913 penetrates the installation box 62. The scraper 911 is fixedly installed at the lower end of the horizontal plate 63.

[0071] The mud cone 912 is fixedly sleeved on the outer periphery of the support rod 921. Both ends of the support rod 921 penetrate the installation box 62 and are rotationally connected with the installation box 62. One end of the support rod 921 is fixedly connected with the output shaft of the driving motor 4.

[0072] It is worth noting that the slurry after being fully stirred and chemically reacted by the stirring member 92 and the slurry treatment mechanism 10 is conveyed to the inside of the installation box 62. In this process, the mud cone 912 is fixedly sleeved on the outer periphery of the support rod 921 and rotates synchronously with it. The mud cone 912 is made of water-permeable material and has good filtering performance, which can allow water to pass through while retaining solid particles in the slurry.

[0073] When the through pipe 913 is connected with an external pump and started, the pump can effectively guide the free water in the slurry to pass through the surface of the mud cone 912 and enter the inside of the cone bucket 914 through the adsorption holes 915, thereby realizing the preliminary dewatering treatment of the slurry.

[0074] At the same time, the outer surface of the cone 912 will gradually adsorb the residual mud layer, in order to prevent the accumulation of mud from affecting the subsequent processing efficiency, the device is provided with a scraper 911, which is fixed to the lower end of the horizontal plate 63 and located near the outer surface of the cone 912. With the continuous rotation of the cone 912, the scraper 911 is in contact with the surface, which can automatically remove the mud residues attached to the outer wall of the cone 912, ensuring that the cone 912 always maintains good water permeability and stable operation.

[0075] After the heavy metal contaminated mud is fully stirred and chemically reacted by the stirring element 92 and the mud treatment mechanism 10, the mud is transported to the inside of the installation box 62 and enters the pretreatment dehydration stage. In this process, the cone 912 is fixedly sleeved on the outer periphery of the support rod 921 and rotates synchronously with it. The cone 912 is made of a material with excellent water permeability, which can effectively intercept solid particles in the mud while allowing free water to pass through, thereby realizing the preliminary dehydration function of solid-liquid separation and providing a more easily processed material state for subsequent deep removal of heavy metals.

[0076] During the dehydration process, the pipe 913 is connected to the external pump and started to suck and discharge the air inside the cone bucket 914, forming a negative pressure environment and generating an adsorption force at the adsorption hole 915. The adsorption force can guide the free water in the mud to quickly pass through the surface of the cone 912 and enter the inside of the cone bucket 914, realizing efficient pre-dehydration, improving dehydration efficiency and reaction speed, and shortening the processing period. It is especially suitable for processing heavy metal contaminated mud with high water content and strong viscosity.

[0077] In order to prevent the residual solid substances in the mud from adhering to the surface of the cone 912 and causing blockage, affecting the dehydration efficiency and equipment stability, the device is specially provided with a scraper 911, which is fixed to the lower end of the horizontal plate 63 and closely adheres to the outer surface of the cone 912. With the continuous rotation of the cone 912, the scraper 911 can automatically remove the mud residues attached to its surface, ensuring that the cone 912 always maintains good water permeability and stable operation.

[0078] Embodiment four, the embodiment provides a further technical scheme of the mud discharge mechanism 8.

[0079] The mud discharge mechanism 8 comprises a base 81 and a support rod 84, the lower end of the base 81 is provided with an inclined plate 85, the bottom wall of the base 81 is provided with a sleeve 82, and the outer surface of the sleeve 82 is provided with an outlet 83;

[0080] The outer surface of the support rod 84 is provided with a material rod 86, the outer surface of the material rod 86 is provided with a plurality of material grooves 87 arranged in a ring array, the material rod 86 is located inside the sleeve 82, and the base 81 is fixedly installed at the lower end of the installation box 62.

[0081] It is worth mentioning that when the mud flows into the installation box 62 after the preliminary treatment and gradually deposits into the base 81 of the mud discharging mechanism 8, since the base 81 is designed in a triangular prism structure, its geometric shape can guide the mud to naturally gather to one side where the material rod 86 is located, thereby improving the concentration of mud conveying;

[0082] Under the driving of the driving motor 5, the supporting rod 84 rotates and transmits power to the material rod 86 through the linkage structure to make it rotate synchronously. The rotating action of the material rod 86 can disturb the mud in the base 81, so that the mud is pushed to the inlet area of the inclined plate 85 in an intermittent manner, realizing accurate control and uniform distribution of the mud flow.

[0083] In addition, in order to prevent the mud from being poured into the inclined plate 85 in a large amount at one time under the action of gravity and affecting the subsequent dehydration effect, a sleeve 82 is arranged in the device, which is fixed to the connecting part between the base 81 and the inclined plate 85, plays a role of flow limiting and guiding, can effectively adjust the amount of mud entering the inclined plate 85, and avoid the problems of uneven flow or equipment blockage caused by mud overload.

[0084] Finally, the mud flowing out after being guided by the inclined plate 85 flows in a relatively uniform state and smoothly spreads on the surface of the dehydration mechanism 7 below, providing a good material basis for subsequent deep dehydration treatment and ensuring the efficiency and stability of the dehydration process.

[0085] In the process of repairing heavy metal contaminated soil, the mud flowing into the installation box 62 after the preliminary treatment gradually deposits into the base 81 of the mud discharging mechanism 8. The base is designed in a triangular prism structure, and its geometric shape can effectively guide the mud to naturally gather to one side where the material rod 86 is located, significantly improving the concentration and flowability of the mud in the conveying process. Under the driving of the driving motor 5, the supporting rod 84 rotates and transmits power to the material rod 86 through the linkage structure to make it rotate synchronously. The material rod 86 disturbs the mud in the base 81 in the rotating process, so that the mud is pushed to the inlet area of the inclined plate 85 in an intermittent manner. This intermittent discharging mechanism effectively avoids the problems of local accumulation and uneven dehydration caused by continuous flow of mud, and is suitable for processing of viscous mud containing high heavy metal ions.

[0086] In order to prevent the mud from being poured into the inclined plate 85 in a large amount at one time under the action of gravity and affecting the subsequent dehydration effect, a sleeve 82 is arranged in the device, which is fixed to the connecting part between the base 81 and the inclined plate 85, and has the functions of flow limiting and guiding. By adjusting the flow area of the sleeve 82, the amount of mud entering the inclined plate 85 can be accurately controlled, and the problems of flow disorder or equipment blockage caused by mud overload can be avoided. Finally, the mud flowing out after being guided by the inclined plate 85 is in a relatively uniform state, and is smoothly spread on the processing surface of the lower dehydration mechanism 7. The good distribution state of the mud provides an ideal material basis for subsequent deep dehydration and heavy metal separation, ensures that the mud is evenly stressed and efficiently drained during the dehydration process, and significantly improves the efficiency of heavy metal separation from the solid phase.

[0087] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A soil conservation based heavy metal pollution treatment apparatus comprising a dewatering mechanism (7), characterized by: The upper end of the dewatering mechanism (7) is provided with a soil dilution stirring box (1) for stirring the slurry, the bottom of the soil dilution stirring box (1) is provided with a pump (2), the top of the pump (2) is provided with a slurry pipe (3), the upper end of the dewatering mechanism (7) is provided with a mounting mechanism (6), the bottom of the mounting mechanism (6) is provided with a slurry discharge mechanism (8) for discharging and conveying the slurry to the surface of the dewatering mechanism (7) for dewatering treatment, one side of the slurry discharge mechanism (8) is provided with a driving motor (5), one side of the mounting mechanism (6) is provided with a driving motor (4), one side of the inside of the mounting mechanism (6) is provided with a slurry treatment mechanism (10) matched with the slurry pipe (3) to change the flow direction of the slurry, and two slurry cleaning mechanisms (9) are also symmetrically arranged in the mounting mechanism (6) to treat heavy metal pollutants in the slurry in cooperation with the slurry treatment mechanism (10); The slurry cleaning mechanism (9) comprises: A stirring part (92) for stirring the slurry in cooperation with the slurry treatment mechanism (10) to accelerate the separation and treatment of heavy metal pollutants; A water absorbing part (91) for preliminarily removing part of the water in the slurry to realize preliminary dewatering treatment.

2. A soil protection based heavy metal pollution treatment device according to claim 1, characterized in that: The slurry treatment mechanism (10) comprises a mounting pipe (101), two water spraying ports (102) for spraying chemical reagents are symmetrically arranged on the outer surface of the upper part of the mounting pipe (101), and a bunching part (103) is arranged on one side of the mounting pipe (101).

3. A soil protection based heavy metal pollution treatment device according to claim 2, characterized in that: The stirring part (92) comprises a supporting rod (921) and a plurality of arc fittings (923) arranged in an annular array, a plurality of rectangular grooves (924) are arranged on the inner wall of the arc fitting (923) in equal intervals, the arc fitting (923) is located in the inside of the mounting pipe (101), and the arc fitting (923) is attached to the inner wall of the mounting pipe (101).

4. A soil protection based heavy metal pollution treatment device according to claim 3, characterized in that: A plurality of rotating leaves (922) are arranged on one side of the outer surface of the supporting rod (921) in an annular array, and the rotating leaves (922) are all mounted on the inner wall of the arc fitting (923).

5. A soil protection based heavy metal pollution treatment device according to claim 3, characterized in that: The mounting mechanism (6) comprises a mounting box (62) mounted on the upper end of the dewatering mechanism (7), two supporting rings (64) are symmetrically arranged on one side of the inner wall of the mounting box (62), the mounting pipe (101) is mounted on the outer surface of the supporting ring (64), a horizontal plate (63) is arranged on the upper end of the mounting box (62), and one end of the slurry pipe (3) extends to the inside of the mounting pipe (101) through the horizontal plate (63).

6. A soil protection based heavy metal pollution treatment device according to claim 5, characterized in that: The water absorbing part (91) comprises a mud cone (912) and a scraper (911), the inside of the mud cone (912) is provided with a cone hopper (914), a plurality of adsorption holes (915) are arranged on the outer surface of the cone hopper (914) in an annular array, and the cone hopper (914) is communicated with a through pipe (913) at one end.

7. A soil protection based heavy metal pollution treatment apparatus according to claim 6, characterized in that: The inner wall side of the installation box (62) is symmetrically provided with an installation ring (61), the cone bucket (914) is fixedly installed inside the installation ring (61), one end of the through pipe (913) penetrates the installation box (62), and the scraper (911) is fixedly installed at the lower end of the horizontal plate (63).

8. A soil protection based heavy metal pollution treatment device according to claim 6, characterized in that: The mud cone (912) is fixedly sleeved on the outer circumferential surface of the support rod (921), both ends of the support rod (921) penetrate the installation box (62) and are rotationally connected with the installation box (62), and one end of the support rod (921) is fixedly connected with the output shaft of the driving motor (4).

9. A soil protection based heavy metal pollution treatment device according to claim 5, characterized by: The slurry discharging mechanism (8) comprises a base (81) and a support rod (84), the lower end of the base (81) is provided with an inclined plate (85), the bottom wall of the base (81) is provided with a sleeve (82), and the outer surface of the sleeve (82) is provided with an outlet (83); The outer surface of the support rod (84) is provided with a material rod (86), the outer surface of the material rod (86) is provided with a plurality of material grooves (87) arranged in an annular array, and the material rod (86) is located inside the sleeve (82).

10. A soil protection based heavy metal pollution treatment apparatus according to claim 9, characterized in that: The base (81) is fixedly installed at the lower end of the installation box (62), the base (81) is in a triangular prism shape, and one end of the support rod (84) is fixedly connected with the output end of the driving motor (5).

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